Julian



(No Model.)

J. 0. ELLING-ER. GOUPLING POB, SHAFTS. AND .LIKE PURPOSES.

No. 428,808. Patented May 27, 1890.

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UNITED STATES PATENT OFFICE.

JULIAN o. ELLINGER, or NEW YORK, N. Y.

COUPLING FOR SHAFTS AND LIKE PURPOSES.

SPECIFICATION forming part of Letters Patent lNo. 428,808, dated May 27, 1890.

Application filed September 21, 1889. Serial No. 324,642. (No model.)

T0 all whom. it may concern,.-

Be it known that I, JULIAN O. ELLINGER, a citizen of the United States, residing at the city of New York, in the county and State of New York, have invented a certain new and useful ImprovementJ in Couplings for Shafts and for Like Purposes, of which the following is a specification.

The object I have in view is to produce a coupling for shafts and for like purposes which will be simple in construction, can be readily and quickly applied, and will be reliable and efficient in use.

My coupling is intended not only for shafts, but is also particularly applicable to rod or shaft like electrical conductors, since the great gripping force which constitutes a feature of its action is well adapted for forming and preserving good electrical contact. It may also be applied to all uses for which a shaft-coupling is adapted, such as the coupling of rods, pipes, &c.

My ,coupling is composed of a clamping-` sleeve and two surrounding compression collars or nuts. The clamping-sleeve is split longitudinally from end to end upon one or on opposite sides, and the sections of shafting or other objects to be coupled meet within the sleeve, which is bored out to lit them snugly, whether of the saine size or of differentsizes, the longitudinal split or splits permitting the compression of the sleeve'upon the abutting shafts, rods, pipes, or the like. If the shafts or other objects are not to meet within the sleeve, (a construction applicable to one form of connection for electrical conductors,) the sleeve may become a solid body, either rigid or flexible, and be provided with split cups at its ends, which receive the ends of the rodlike conductors to be united. The opposite ends of the clamping-sleeve are constructed to form cams on their outer surfaces. There are preferably two cams on each end of the sleeve, these being each formed, preferably, as semicircles from centers eccentric in the same degree to the center of the bore of the sleeve, but in opposite directions, so that two equiangular spirals will be produced, the highest point of one spiral terminating at the lowest point of the other spiral.

Upon the ends of the sleeve and surrounding the cams are 'two compression collars or nuts, which are formed externally in any suitable manner for the application of power of rotation thereto, either by a hand wrenchbar or by a worm or other gearing. These compression-collars are constructed to present internally similar but reverse ca1nfaces to those upon the ends of the sleeve, so that by a partial rotation of the compressioncollars the clamping-sleeve will be forced upon the sect-ions of shafting or the like inclosed by it with a gripping action of great power, and such sections will be securely and effectively coupled, so as to be capable of trans- Initting great strain without danger of separation. It is only necessary to provide a sufiicientweight of metal in the clamping-sleeve and coInpression-collars to give the coupling strength to transmit power up to the limit of capacity of the shafts themselves, since the gradual rise of the equiangular spiral cams gives a gripping action which, if setwith sufficient initial force, will hold up to the breaking-point of the parts. Y

In uniting electrical conductors the power'- ful compressing action of the spiral cams enables good electrical contacts to be formed and maintained between the clamping-sleeve and the rod or shaft like conductors which are united by it.

The compression-collars may be provided with set-screws; but these are -not essential. f I prefer that the cams at one end of the coupling should be set in the opposite direction to those at the other end of the coupling, so that the compression-collars willbe rotated in opposite directions to grip the sleeve; but this, also, is not essential.

In the accompanying drawings, forming a part hereof, Figure l is a side elevation of the coupling shown as applied to the uniting of electrical conductors; Fig. 2, a cross-sec tion on line 2 2 in Fig. l; Fig. 3, a side elevation and partial section of the coupling applied to shafting; Fig. 4, an elevation of a compression-collar, showing it formed as a worm-wheel; and Fig. 5 is an elevation and partial section of the coupling as applied to a flexible coupling for electrical conductors.

Like letters denote corresponding parts in all the figures.

IOOA

A A represent the sections of shnfting, rods,pipes,eleet1ionl eo1ull'1etors,nnd the like intended to be Coupled together. The clumping-sleeve of the coupling` is preferably nmde in two longitudinal parts l B, ns shown in Figs. l, 2, and 3, although it niny he formed of two split oups C (.f,joined together by u solid body l), us shown in Fig'. Each end of the sleeve is provided with two spiral @funs av o.

E E :ire the two compression collars or nuts surrounding` the emns nt the opposite ends of the elmnping-sleeve, and having internal erunfftees i) Z1', which are the reverse of the cams o o. The collars E E may have angular exteriors to forni nut-faces for turning, or they eun he provided with gennteeth r, :is in Fig. 4, for the saine purpose.

Set-screws (l may he provided for assisting iu holding' the eollnirs :Lfter they :tre set.

\Vha.t I elninl ish l. In a coupling` for shafts and forlike purposes, the Combination, with :t split elzunpingsleeve provided with external eznns at its opposite ends, of eonlpression-collnrs hftvinj.;` internal reverse onlus and adapted to surround :1nd engage the emns of the sleeve und to elnnlp such sleeve upon the ends of the shnft or other sections to he coupled, substantially as set forth.

In :i coupling for shafts and for like purposes, the eolnhilmvtioil, with :L split elannpingsleeve provided with two equizingular spiral emns at ezleh end thereof, of compression-eollnrs havin;v intel-ind reverse eznns and adapted to surround and engage Jthe eznns of the sleeve and to elzunp such sleeve upon the ends of the shaft or other sections to he coupled, substmitinlly :is set forth.

I5. ln :L coupling' forshaftsztnd for like purposes, the combination, with n elmnping-sleeve divided longitiulina-llyinto two parts and provided with two equiztngular spiral cams at eneh end thereof, of compression-collars having internal. reverse ennis and adapted to surround ;tnd ellg'aee the mms of the sleeve and to elannp such sleeve upon the ends of the shaft' or other sections to he eoupled,suhst:ni titlly :is set forth.

rlhis specification signed sind \\'itnessed this ibth day of August, 1839.

JULIAN O. ELLINGER.

\\"itnesses:

D. TI. DRIsCoLL, WILLIAM PELZER. 

